Life jacket, also known as lifesaving vest, is a kind of health care clothing, design similar vest, nylon fabric or neoprene (NEOPRENE), buoyancy materials or inflatable materials, reflective materials, etc. made. The General Service life of 5-7 years, is on board, aircraft, one of the lifesaving equipment. Usually vest-type, made of foam or cork.
Wear on the body with sufficient buoyancy, so that the head of the drowning can be exposed to the water.